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athlete’s foot

Athlete’s foot is an infection caused by a type of fungus known as a
dermatophyte. Able to infect only the top layer of dead keratin,
dermatophytes affect the skin, hair shafts, and nails. Dermatophytes are classified into three genera:
Trichophyton,
Microsporum, and
Epidermophyton.
T. rubrum is the
dermatophyte most commonly...

ringworm

superficial skin lesions caused by a highly specialized group of fungi called
dermatophytes that live and multiply on the surface of the skin and feed on keratin, the horny protein constituting the major part of the outermost layer of the skin and of the hair and nails. The fungi produce responses in the skin that vary from slight scaling to blistering and marked disruption of the keratin...